Gynostemma in water can lower blood pressure, because gynostemma is rich in a variety of saponin glycosides, flavonoids, amino acids and various vitamins, and many cellulose components. A variety of saponins extracted from it, has many biological activities and medicinal value, which has a strong antioxidant effect, can quickly enter the damaged vascular parts, improve vascular function, increase the elasticity of blood vessels, expand the vascular capacity, enhance the oxygen supply to the heart muscle and brain, there is a large degree of peripheral vascular and coronary vessels to reduce the resistance to microcirculation, enhance coronary artery flow, can improve the body’s immunity It can reduce the viscosity of blood, strengthen the function of blood vessels, and play a role in lowering blood pressure. The high saponin content and sweet smell of gynostemma are suitable for long-term use by patients with hypertension.